Home / 100,366.36-138,466.06-57,916.69

Finding the Fourth Proportional to 100,366.36, 138,466.06 and 57,916.69

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Solution

The fourth proportional to 100,366.36, 138,466.06 and 57,916.69 is: 79,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.36 : 138,466.06 = 57,916.69 : x
  2. Step 2: Convert to fraction form
    100,366.36/138,466.06 = 57,916.69/x
  3. Step 3: Cross multiply
    100,366.36x = 138,466.06 × 57,916.69
  4. Step 4: Simplify right side
    100,366.36x = 8,019,495,872.54
  5. Step 5: Solve for x
    x = 8,019,495,872.54/100,366.36
  6. Step 6: Final answer
    x = 79,902.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.